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Diodes Incorporated AH1884-ZG-7
- Part No.:
- AH1884-ZG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- SOT-553
- Datasheet:
-
AH1884-ZG-7.pdf
- Description:
- MAGNETIC SWITCH OMNIPOLAR SOT553
- Quantity:
- Payment:
- Shipping:
Inventory:3,252
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Product details
Overview
AH1884-ZG-7 from Diodes Incorporated is a micropower, ultra-sensitive dual-output Hall effect switch with two independent Hall plates and CMOS drivers, designed for battery-powered handheld devices. It operates from 1.65V to 3.3V, consumes only 7–12 µA average supply current at 1.8V, features ±37–55 G operate points (south/north pole), and delivers active-high and active-low complementary outputs in SOT553 package.
For engineers reviewing the AH1884-ZG-7 datasheet, AH1884-ZG-7 pinout, AH1884-ZG-7 application, or AH1884-ZG-7 equivalent, key selection considerations include magnetic sensitivity symmetry (Bop/Brp hysteresis), dual-output logic polarity, micropower operation below 15 µW, and SOT553 footprint compatibility in space-constrained mobile sensor designs.
Technical Context
The AH1884-ZG-7 integrates chopper-stabilized amplifiers with offset cancellation for each Hall plate, enabling stable switching across temperature (−40°C to +85°C) with <8 G typical hysteresis. Its dual-output architecture provides simultaneous active-high (Out2) and active-low (Out1) signals without external inversion logic.
Operation relies on magnetic flux density thresholds: output turns on when |B| exceeds Bop (±37–55 G), remains latched until |B| falls below Brp (±15–29 G), and exhibits <0.1% duty cycle in low-power sampling mode with 50–100 µs wake-up time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65 V to 3.3 V - supports single-cell Li-ion and alkaline battery systems without regulation |
| Avg. Supply Current | 7–12 µA at 1.8 V - enables multi-year operation in coin-cell–powered sensors |
| Operate Point (Bop) | ±37–55 G - detects weak magnetic fields from small magnets or low-strength actuation |
| Release Point (Brp) | ±15–29 G - ensures reliable release with ≥3 G hysteresis to prevent chatter near threshold |
| Output Types | Complementary: Out1 (active-low), Out2 (active-high) - eliminates need for external inverters |
| Operating Temp. | −40°C to +85°C - qualified for consumer handheld and industrial ambient environments |
| ESD Rating | >4 kV HBM - withstands handling and assembly electrostatic discharge without protection circuitry |
Pinout & Package
Package: SOT553 - 5-pin, 1.7 mm × 1.2 mm × 0.6 mm surface-mount package with exposed thermal pad (not electrically connected), RoHS-compliant "Green" molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Out2) | Active-high digital output | Drives high-impedance loads directly; sinks ≤0.5 mA when low |
| 2 (GND) | Ground reference | Common return path for both outputs and internal circuitry |
| 3 (NC) | No connection | Internally unconnected; must be left floating or tied to GND per layout guidelines |
| 4 (Vdd) | Positive supply input | Accepts 1.65–3.3 V; bypass capacitor recommended within 2 mm |
| 5 (Out1) | Active-low digital output | Drives low-impedance loads; sources ≤0.5 mA when high |
Key Features
| Feature | Design Value |
|---|---|
| Chopper stabilization | Eliminates DC offset drift over temperature and time, ensuring consistent Bop/Brp across life |
| Dual Hall plates + dual outputs | Enables simultaneous detection of magnetic polarity and direction without external logic |
| Ultra-low power consumption | 15 µW total operation at 1.8 V - extends battery life in always-on proximity sensing |
| RF noise immunity | Immune to common cellular and Bluetooth band interference without shielding |
| Stress-insensitive design | Unaffected by PCB warpage or mechanical mounting stress that degrades conventional Hall sensors |
Applications
| Flip Cover Detection | Smartphone Lid Switch |
|---|---|
Use Scenario: Detecting open/closed state of clamshell phone or tablet cover using embedded magnet and sensor. IC Role / Device Role / Timing Role: Dual-output Hall switch providing synchronized active-high and active-low signals to MCU GPIOs. Use Value: Eliminates need for external inverter; 7–12 µA avg. current enables >2-year battery life in always-monitoring mode. | Use Scenario: Enabling/disabling display backlight and touch controller when smartphone lid is closed. IC Role / Device Role / Timing Role: Magnetic presence detector with 50–100 µs wake-up latency and latch behavior. Use Value: Fast response ensures immediate screen off/on; ±37–55 G sensitivity works with miniature neodymium magnets. |
| PDA Stylus Presence | Cordless Phone Base Detection |
Use Scenario: Confirming stylus insertion into PDA slot via magnetic tab on stylus barrel. IC Role / Device Role / Timing Role: Low-power proximity sensor interfacing directly to microcontroller interrupt pins. Use Value: NC pin allows compact layout; SOT553 footprint fits tight stylus-dock cavities. | Use Scenario: Detecting handset placement on cordless phone base station to initiate charging or sync. IC Role / Device Role / Timing Role: Dual-threshold magnetic switch with hysteresis preventing false triggers during placement. Use Value: ±15–29 G release point ensures stable hold even with minor vibration or thermal drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ALLEGRO A3212LLHLT-T | Single-output (open-drain), 2.5–3.6 V supply, 5 µA quiescent current, ±35 G Bop | Lacks complementary outputs; requires external pull-up and inverter for dual-signal interface | Preferred where board area permits discrete logic and lower supply voltage range is acceptable |
| MELEXIS US5881LUA-AAA-000-REEL | Single-output (push-pull), 2.7–24 V supply, 3.5 µA avg. current, ±25 G Bop | Higher voltage tolerance but reduced sensitivity; no dual-output capability | Suitable for wider-input industrial systems where 1.65–3.3 V operation is not required |
Compared with A3212LLHLT-T and US5881LUA-AAA-000-REEL, AH1884-ZG-7 uniquely delivers true complementary outputs in a micropower, low-voltage package-enabling direct MCU interface without added components while maintaining sub-55 G operate sensitivity critical for compact handheld designs.
Availability
AH1884-ZG-7 is available at Aetrix Electronics and suitable for flip-cover detection, smartphone lid switching, PDA stylus presence monitoring, and cordless phone base station sensing requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for AH1884-ZG-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, energy-efficient components for consumer, industrial, and computing markets.
The AH1884 belongs to Diodes' Hall-effect sensor product line, engineered specifically for ultra-low-power, high-sensitivity magnetic switching in battery-operated portable electronics.
FAQ
What is the function of Pin 3 (NC) on the AH1884-ZG-7?
Pin 3 is a no-connect terminal with no internal bond wire or circuit connection. It must remain unconnected in the PCB layout; Diodes Incorporated's AP02001 recommends leaving it floating or optionally tying it to GND for mechanical stability, but not for electrical functionality. This pin does not affect device operation or magnetic performance.
Can AH1884-ZG-7 operate reliably at 1.65 V supply?
Yes - the AH1884-ZG-7 is fully specified down to 1.65 V, with guaranteed operate/release points and 7–12 µA average current at that voltage. Electrical characteristics including Bop (±37–55 G) and Brp (±15–29 G) remain valid across the full 1.65–3.3 V range, making it suitable for aging primary batteries or undervoltage brown-out conditions.
How do the dual outputs (Out1 and Out2) behave under magnetic field transitions?
Out1 (active-low) and Out2 (active-high) are strictly complementary: when magnetic flux exceeds Bop, Out1 goes low and Out2 goes high; when flux drops below Brp, both revert simultaneously - Out1 rises and Out2 falls. The outputs are internally latched and share identical timing (50–100 µs wake-up, no propagation delay mismatch).
Is AH1884-ZG-7 qualified for automotive use?
No - AH1884-ZG-7 is rated for −40°C to +85°C operation and intended for consumer handheld equipment (cellular phones, PDAs, cordless phones). It lacks AEC-Q200 qualification, extended temperature grade (−40°C to +125°C), or automotive-specific reliability testing. For automotive cabin or body applications, Diodes' AH336xQ series or equivalent AEC-Q200 Hall switches should be selected instead.
AH1884-ZG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-553
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Omnipolar Switch
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- Sensing Range:
- ±5.5mT Trip, ±1.5mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 1.65V ~ 3.3V
- Current - Supply (Max):
- 12µA
- Current - Output (Max):
- -
- Output Type:
- Push-Pull
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-553
AH1884-ZG-7 FAQ
1.How can I place an order for AH1884-ZG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH1884-ZG-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AH1884-ZG-7 reliable?
The price and inventory of AH1884-ZG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH1884-ZG-7 is usually 5 days.
3.What payment methods are accepted for AH1884-ZG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH1884-ZG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH1884-ZG-7?
AH1884-ZG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH1884-ZG-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AH1884-ZG-7?
For technical support, including AH1884-ZG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH1884-ZG-7 requirements.
6.How does Aetrix verify that AH1884-ZG-7 is sourced from the original manufacturer or authorized distributors?
All AH1884-ZG-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AH1884-ZG-7 meets industry standards.
7.What is the process for return or replacement of AH1884-ZG-7?
All AH1884-ZG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH1884-ZG-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AH1884-ZG-7 part is unused and in its original packaging.
Return procedure for AH1884-ZG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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